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频率调谐曲线的
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  frequency tuning curves
     By iontophoresis application of Gal, the effects of Gal on basic response properties such as rate-intensity functions (RIFs), frequency tuning curves (FTCs), discharge pattern of inferior collicular neurons of mouse were investigated. A total of 96 neurons were attained with single and multiunit recording method from mouse (Mus musculus, Km) IC.
     故此对听觉系统而言,如果Gal有作用,可称之为是一种新异的听觉中枢调制物,本实验通过观察离子电泳Gal的方法,观察了Gal对IC神经元基本声反应特性(如BF、MT、发放模式)、强度-发放率函数和频率调谐曲线的影响,研究这种新异调制物Gal在IC神经元处理声信息的作用。
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     Among IC neurons studied, there were three kinds of frequency tuning curves: V shaped, enclosed and U shaped.
     下丘听神经元的频率调谐曲线的形状有三种 :V型、封闭型和U型。
短句来源
     We compared the sharpness of frequency tuning curves, minimum threshold, and best frequencies of 47 IC neurons determined at 5 azimuthal angles.
     以C -40°的频率调谐曲线为对照 ,声源方位改变时 ,多数神经元频率调谐曲线的形状和最佳频率不变。
短句来源
     In order to study the effect of weak noise on the sound signal extraction of mouse (Mus musculus Km) inferior collicular (IC) neurons from environments,we examined the changes in frequency tuning curves (FTCs) of 32 neurons induced by a weak noise relative to 5 dB below minimum threshold of tone (reMT-5 dB) under free field stimulation conditions.
     为探讨弱噪声对小鼠 (MusmusculusKm)中脑下丘 (inferiorcolliculus ,IC)神经元声信号提取的影响 ,采用单位胞外记录方法 ,研究了加入弱白噪声 (强度相当于纯音阈强度下 5dB)前后神经元频率调谐曲线的变化。 实验共记录到 10 4个下丘神经元 ,测量了 32个神经元的频率调谐曲线。
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  “频率调谐曲线的”译为未确定词的双语例句
     6) The mutual facilitation between paired neurons not only increased discharge rate, but also widened the frequency tuning, i.e., increased response frequency.
     6)配对神经元之间的相互易化作用不仅表现在放电率增加上,也表现在频率调谐曲线的扩宽,即频率响应范围扩大。
短句来源
     In order to study the effect of weak noise on the sound signal extraction of mouse (Mus musculus Km) inferior collicular (IC) neurons from environment, we examined the change in frequency tuning of neuron induced by a weak noise relative to 5 dB below minimum threshold (reMT-5 dB) of tone. 12 healthy adult mice (20-25 g, b. wt.) were used for this study.
     本实验旨在探讨弱噪声对小鼠(Mus musculus Km)中脑下丘(inferior colliculus IC)神经元声信号提取的影响及其神经机制,我们选用相当于纯音阈下5 dB的白噪声(white noise),比较加入噪声前后神经元频率调谐曲线的变化和注射γ-氨基丁酸(γ-aminobutyric acid,GABA)能受体拮抗剂荷包牡丹碱(bicuculline,Bic)后对该变化的影响。
短句来源
     Neither such shift of spatial frequency tuningcurves of the P-VEP in adult cats, nor such functional competition between the twoeye in P-ERG responses during early development of kittens of monocular deprivationand reverse suture was found.
     在单眼缝合前后的成年猫则不存在上述P-VEP空间频率调谐曲线的位移。 P-ERG的测定表明,在发育早期双眼视网膜间不存在功能上的竞争。
短句来源
     The units tuned to exposing frequency in animals exposed at the first and third postnatal week showed stronger clustering compared to the control and those exposed at the fifth postnatal week. The tonotopic organizations and Q10-dB values of the units were also abnormal.
     结果表明,出生后第1、3周开始声暴露的实验组,其神经元调谐于暴露声频段的数量较对照组和出生后第5周开始声暴露的实验组明显增多,且音调筑构出现扭曲、神经元频率调谐曲线的Q10-dB值也较高。
短句来源
     The intensity-rates functions,intensity-latency functions and frequency-turning curves were recor(ded) by extracellular electrophysiological recording techniques.
     采用细胞外电生理记录技术研究下丘核区神经元在水杨酸钠给药后强度-发放率函数、强度-潜伏期函数和频率调谐曲线的变化。
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  相似匹配句对
     3. To change the frequency of the laser by shift the angle of the grating
     3. 频率调谐
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     Drawing Frequency Curves by Computer
     频率曲线的计算机绘制
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     OPTICALLY CONTROLLED FREQUENCY TUNING OF DIELECTRIC RESONATOR
     光控介质谐振器的频率调谐
短句来源
     A STUDY OF HYDROLOGICAL FREQUENCY CURVE TYPES
     水文频率曲线的线型研究
短句来源
     Among IC neurons studied, there were three kinds of frequency tuning curves: V shaped, enclosed and U shaped.
     下丘听神经元的频率调谐曲线的形状有三种 :V型、封闭型和U型。
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  frequency tuning curves
Retinal ganglion cells of type X show, for scotopic levels of luminance, a flattening of their spatial frequency tuning curves in the low spatial frequency range.
      
Spatial response profiles to stationary and moving stimuli and spatial frequency tuning curves to drifting sinusoidal gratings were recorded from a series of cells in the simple family.
      
On the assumption that cells in the simple family operate linearly, spatial response profiles recorded experimentally were compared with those predicted by inverse Fourier transformation of the spatial frequency tuning curves.
      
Conversely, the spatial frequency tuning curves recorded experimentally were compared with those predicted from the response profiles to moving and stationary stimuli.
      
The discharge variance was on average 1.7 times the mean rate for data obtained from measurements of the neurones' spatial frequency tuning curves, and 1.48 times the mean for data from the response-contrast determination.
      
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126 lateral geniculate neurones were examined on unanaesthetized immobili-zed cats.The temporal frequency tuning curves of single neurones were measuredby stimulating the cat's eye with a sinusoidally modulated light spot,generated ona CRT and presented to each neurone's receptive field center or its surround.Theaverage discharging rate was used as an index to judge the sensitivity to different mo-dulating frequencies.By comparing the mean impulse rates responding to modula-ted light stimulations(modulated discharge...

126 lateral geniculate neurones were examined on unanaesthetized immobili-zed cats.The temporal frequency tuning curves of single neurones were measuredby stimulating the cat's eye with a sinusoidally modulated light spot,generated ona CRT and presented to each neurone's receptive field center or its surround.Theaverage discharging rate was used as an index to judge the sensitivity to different mo-dulating frequencies.By comparing the mean impulse rates responding to modula-ted light stimulations(modulated discharge rate)with those responding to unmodulatedlight(unmodulated discharge rate),two opposite effects were observed.The majorityof the cells(93.7)% showed modulation-excitatory curves in which the modulateddischarge rates were higher than the unmodulated ones.A minority of the cells(6.3%)showed modulation-inhibitory curves in which the modulated dischargerates were lower than the unmodulated ones.The modulation-excitatory curvescould further be grouped into two subtypes,the“band-pass filters”and the“low-pass filters”.Similarly,the modulation-inhibitory curves could also be dividedinto two subtypes,the“band-rejection filters”and the“low-rejection filters”.Onboth sides of the temporal frequency tuning curve subsidiary sidebands oppositein direction to the main part of the curves could often be seen,i.e.inhibitorysidebands flanking the modunation-excitatory tuning curve and excitatorysidebands flanking the modulation-inhibitory tuning curve.Most of the tuningcurves have only one peak.of the 110 curves measured the peak loci show anormal distribution which centered at 7 Hz.The tuning curves due to stimulationof different locations of the periphery were almost the same.But the tuningproperties of the receptive field centers were different from those of the periphe-ries either in shape or in band-width.

用示波器产生亮度受正弦波调制的小光点刺激清醒猫外膝体神经元的感受野,以不同调制频率下神经元放电的平均频率为指标,分析了126个细胞感受野中心的时间频率调谐特性,主要结果如下。(1)大多数(93.7%)细胞呈调制-兴奋型反应,即刺激光的时间调制在一定频率范围内使放电频率增加;少数(6.3%)细胞呈调制-抑制型反应,即在一定频率范围内,时间调制使放电减少。(2)根据调谐曲线的形状和通带宽度,调制-兴奋型反应包括带通滤波器和低通滤波器两种类型,其110个调谐曲线的峰值分布接近正态曲线,多数细胞对7Hz 的调谐最敏感。调制一抑制型反应包括带除滤波器和低除滤波器两类。(3)调制-兴奋型曲线的通带旁边较當出现抑制性侧带,调制-抑制型曲线出现兴奋性侧带。(4)感受野中心区与外周区的时间频率调谐曲线的带宽和形状有所不同。

The frequency tuning curves of 24 sustained and 28 transient geniculate neu-rones were determined.All the sustained cells presented“band-pass”tuning pro-perties,while the majority(64.3%)of the transient cells showed“low-pass”cha-racteristics.However,some of the transient cells(21.4%)also showed typical“band-pass”tuning curves and still some(14.3 %)showed tuning properties somewhat bet-ween the mentioned typical types.The coming into being of the various shapesof the tuning curves in relation to the two types...

The frequency tuning curves of 24 sustained and 28 transient geniculate neu-rones were determined.All the sustained cells presented“band-pass”tuning pro-perties,while the majority(64.3%)of the transient cells showed“low-pass”cha-racteristics.However,some of the transient cells(21.4%)also showed typical“band-pass”tuning curves and still some(14.3 %)showed tuning properties somewhat bet-ween the mentioned typical types.The coming into being of the various shapesof the tuning curves in relation to the two types of geniculate cells was discussed.

本文记录和分析了52个外膝体细胞的时间频率调谐曲线,其中24个持续细胞均呈带通滤波特性,28个瞬变细胞中既有低通(64.3%),也有带通(21.4%),以及介于两者之间的过渡型(14.3%)。对这两种调谐曲线的形成以及和两类细胞的关系进行了讨论。

Temporal tuning curves of 19 transient and 22 sustained geniculate neuronesof unanaesthetized immobilized cat were determined by using a sinusoidally modula-ted light spot of 0.3°projected to the receptive field center.The sensitivity peakand the degree of modulated change of discharge rate of the tuning curves of tran-sient cells remain practically unaltered with change of mean luminance,reflectinga property of such cells that their average discharge rate is insensitive to the levelof steady illumination.In...

Temporal tuning curves of 19 transient and 22 sustained geniculate neuronesof unanaesthetized immobilized cat were determined by using a sinusoidally modula-ted light spot of 0.3°projected to the receptive field center.The sensitivity peakand the degree of modulated change of discharge rate of the tuning curves of tran-sient cells remain practically unaltered with change of mean luminance,reflectinga property of such cells that their average discharge rate is insensitive to the levelof steady illumination.In contrast,the discharge rate of sustained cell due tomodulation is more or less proportional to mean discharge rate of such cells tounmodulated light of different luminances,while the sensitivity peak remainsunchanged.Of the 6 hi-peaked temporal tuning curves,decrease of light by 1-2log units leads 4 of them to a disappearance of the high frequency peak.Possiblemechanism for the coming into being of the bi-peaked tuning curves was discussed.

用正弦波调制的光点刺激麻痹的清醒猫外膝体神经元感受野中心,当平均亮度改变时,瞬变细胞的时间频率调谐曲线的形状和敏感频率没有或很少变化,与此相应,这些细胞的自发发放也不随未调制的光照水平而改变。持续细胞的调谐曲线的调幅大体随对未调制光照的平均发放水平的升降而增大或减小,但敏感峰不变。衰减平均亮度1—2对数单位,可使多数呈双峰的调谐曲线的高调频峰消失,对产生此变化的原因,曾加以讨论。

 
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